A10VG18/28/45/63 Series Closed-Circuit Makeup Oil Gear Pump

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Product details

I. Product Overview

The A10VG18/28/45/63 series represents a range of variable-displacement axial piston pumps featuring a swashplate design, specifically engineered for closed-circuit hydrostatic transmission systems. These pumps are renowned for their efficiency, reliability, and durability, making them widely applicable across various industries, including construction machinery, metallurgical equipment, and marine machinery.

II. Product Features

1. Adjustable Flow Rate: The flow rate is directly proportional to the drive speed and displacement, and can be infinitely adjusted. By modifying the swashplate angle, the output flow can smoothly transition from zero to its maximum value.

2. Flexible Direction Control: When the swashplate passes through the neutral position, the flow direction changes smoothly, enabling seamless switching between forward and reverse rotations.

3. Diverse Control Options: A variety of highly adaptable control devices are available, such as HD, HD3, HW, DG, DA1, DA2, EP3, EP4, EZ1, and EZ2, catering to different control and regulation requirements.

4. Safety Protection Mechanisms:

• Two pressure relief valves are installed at the high-pressure port of the pump to prevent overloading of the hydrostatic transmission system (pump and motor).

• The high-pressure relief valves also function as boost valves, integrating a boost pump as the supply and control oil pump. The maximum boost pressure is limited by a built-in boost pressure relief valve.

5. Compact Structure, Superior Performance: These pumps boast a high allowable drive speed, favorable power-to-weight ratio, and compact dimensions.

III. Technical Parameters

【表格】

Parameter/Model A10VG18 A10VG28 A10VG45 A10VG63

Maximum Displacement (Vg max, cm³) 18 28 46 63

Boost Pump Displacement (Vg Spc, cm³) (@ p = 20 bar) 5.5 6.1 8.6 14.9

Maximum Speed (Nmax, rpm) (@ Vg max) 4000 3900 3300 3000

Ultimate Maximum Speed (nmax limited, rpm) 4850 4200 3550 3250

Intermittent Maximum Speed (nmax interm., rpm) 5200 4500 3800 3500

Minimum Speed (nmin, rpm) 500 500 500 500

Maximum Flow Rate (qv max, l/min) (@ nmax continuous and Vg max) 72 109 152 189

Maximum Power (Pmax, kW) (@ nmax and Vg max, Δp = 300 bar) 36 54.6 75.9 94.5

IV. Application Areas

1. Construction Machinery: These pumps provide power for the travel, swing, and working attachments of excavators, loaders, rollers, and other equipment.

2. Metallurgical Equipment: They are used in rolling mills, steel-making equipment, and other applications that require high-temperature, high-pressure, and heavy-load conditions.

3. Marine Machinery: These pumps supply hydraulic power for the propulsion systems and deck machinery of ships.

4. Other Fields: They are also applicable in lifting and transport machinery, mining equipment, and construction machinery, among others.

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